vlookup time format

[kelvin_9]

Hi all, i have a question on time format when vlookup.
how can i easier to identify (conditional formatting with color or vlookup to return with my request only?) the table below if i want greater than 18:30(subject to change in A1)

18:45

21:30

17:15

16:30

21:00

19:45

<tbody>
</tbody>

ps: using cells format: [$-10409]h:mm
formula i use:

=IFERROR((VLOOKUP(A10,Sheet1!$Q:$V,6,FALSE)),"")

thanks all